文献类型：期刊文献

英文题名：Electrochemical and quantum-chemical study on newly synthesized triazoles as corrosion inhibitors of mild steel in 1 M HCl

作者：Yan, Ying[1];Lin, Xiaoxiao[1];Zhang, Lehua[1];Zhou, Hao[2];Wu, Laiming[2];Cai, Lankun[1]

机构：[1]East China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China;[2]Shanghai Museum, Shanghai 200050, Peoples R China

年份：2017

卷号：43

期号：5

起止页码：3145

外文期刊名：RESEARCH ON CHEMICAL INTERMEDIATES

收录：;EI(收录号：20165003109015);WOS:【SCI-EXPANDED(收录号:WOS:000399256100028)】；

基金：Projects were supported by the National Natural Science Foundation of China (51671117) and Shanghai City Committee of science and technology research program key support project (13231203000).

语种：英文

外文关键词：Triazoles; Mild steel; Corrosion inhibitor; Electrochemical test; Fukui index

摘要：Several newly synthesized triazoles including 1-(2aEuro(3)-nitrobenzyl)methenylideneamino-2-mercapto-5-(1'-(1',2',4'-triazol)) methenyl-1,3,4-triazole (NMTT), 1-(2aEuro(3)-methoxybenzyl)methenylideneamino-2-mercapto-5-(1'-(1',2',4'-triazol)) methenyl-1,3,4-triazole (MMTT), and 1-((4aEuro(3)-chlorobenzyl)methenylideneamino-2-mercapto-5-(1'-(1',2',4'-triazol)) methenyl-1,3,4-triazole (CMTT) were studied as corrosion inhibitors of mild steel in 1 M HCl by weight loss measurements, electrochemical experiments, and quantum-chemical calculations. The experimental results show that these compounds have high inhibition efficiency in the order CMTT > MMTT > NMTT. CMTT at concentration of 1.0 x 10(-3) M showed the highest inhibition efficiency of 96.4 %. The adsorption of the inhibitors on the metal surface obeyed the Langmuir isotherm, and the basic adsorption mechanism is proposed based on quantum-chemical calculations.